The list of participants can be downloaded at a Past Instant or Scheduled event.

Click on the name of the meeting, in the menu that appears, go to the Details section, and then click on Download participants.

In the list - name, surname, email. Is downloaded as a CSV table.

Please note: that due to the simplified authorization the participant should only enter a name. For the list of participants to be visible by email - participants must be invited by email.
 
For Permanent rooms, the list of participants cannot be downloaded - all data is cleared after the event.